Author: nwhitehorn
Date: Tue Oct 22 20:57:24 2013
New Revision: 256932
URL: http://svnweb.freebsd.org/changeset/base/256932
Log:
Add a new function (OF_getencprop()) that undoes the transformation applied
by encode-int. Specifically, it takes a set of 32-bit cell values and
changes them to host byte order. Most non-string instances of OF_getprop()
should be using this function, which is a no-op on big-endian platforms.
Modified:
head/sys/dev/ofw/openfirm.c
head/sys/dev/ofw/openfirm.h
Modified: head/sys/dev/ofw/openfirm.c
==============================================================================
--- head/sys/dev/ofw/openfirm.c Tue Oct 22 20:50:41 2013 (r256931)
+++ head/sys/dev/ofw/openfirm.c Tue Oct 22 20:57:24 2013 (r256932)
@@ -64,6 +64,7 @@ __FBSDID("$FreeBSD$");
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/systm.h>
+#include <sys/endian.h>
#include <machine/stdarg.h>
@@ -280,6 +281,21 @@ OF_getprop(phandle_t package, const char
return (OFW_GETPROP(ofw_obj, package, propname, buf, buflen));
}
+ssize_t
+OF_getencprop(phandle_t node, const char *propname, pcell_t *buf, size_t len)
+{
+ ssize_t retval;
+ int i;
+
+ KASSERT(len % 4 == 0, "Need a multiple of 4 bytes");
+
+ retval = OF_getprop(node, propname, buf, len);
+ for (i = 0; i < len/4; i++)
+ buf[i] = be32toh(buf[i]);
+
+ return (retval);
+}
+
/*
* Recursively search the node and its parent for the given property, working
* downward from the node to the device tree root. Returns the value of the
Modified: head/sys/dev/ofw/openfirm.h
==============================================================================
--- head/sys/dev/ofw/openfirm.h Tue Oct 22 20:50:41 2013 (r256931)
+++ head/sys/dev/ofw/openfirm.h Tue Oct 22 20:57:24 2013 (r256932)
@@ -105,6 +105,8 @@ phandle_t OF_parent(phandle_t node);
ssize_t OF_getproplen(phandle_t node, const char *propname);
ssize_t OF_getprop(phandle_t node, const char *propname, void
*buf,
size_t len);
+ssize_t OF_getencprop(phandle_t node, const char *prop, pcell_t
*buf,
+ size_t len); /* Same as getprop, but maintains endianness */
int OF_hasprop(phandle_t node, const char *propname);
ssize_t OF_searchprop(phandle_t node, const char *propname,
void *buf,
size_t len);
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